Study of the Transmission System of Spreading Powder Device of Direct Metal Sintering Rapid Prototyping Machine

2012 ◽  
Vol 591-593 ◽  
pp. 602-605
Author(s):  
Ye Liu ◽  
Xin An Dang ◽  
Li Jun Yang
Keyword(s):  
Rapid Prototyping ◽  
Transmission System ◽  
Stepper Motor ◽  
Necessary Condition ◽  
Dynamic Parameters ◽  
Operation Performance ◽  
Main Structure ◽  
Working Principle ◽  
Metal Sintering

Direct metal sintering rapid prototyping mechanism is complex, including many kinds of transmission systems. Spreading powder device is important to direct metal sintering rapid prototyping mechanism. Based on grasping the working principle of the device, through the study of spreading powder device of direct metal rapid prototyping machine, grasp the process of spreading powder and the main structure of the device, and fabricate the simple model of the transmission system. In order to determine the necessary condition of how the spreading powder device functions, the dynamic parameters of the transmission system must be calculated, and the operation performance of the stepper motor must be checked. Then the precision and the processing quality of the finished part can be improved.

Managing an Enterprise and Ethical Dilemmas in Accountancy

2014 ◽  
Vol 9 (2) ◽  
pp. 141-151
Author(s):  
Jolanta Wiśniewska
Keyword(s):  
High Risk ◽  
Ethical Dilemmas ◽  
Business Management ◽  
Relevant Information ◽  
Necessary Condition ◽  
Accounting System ◽  
Quality Of Information ◽  
Economic Entity ◽  
A Company

The purpose of this article is to present the correlation between management of an economic entity and the development of ethical accounting dilemmas in the era of high-risk business. In the globalisation era and recurring economic crises, realisation of the objectives of a company takes place under high risk conditions. It is therefore necessary to use a proper management system. The necessary condition for making all decisions is to have relevant information. The value and relevance of these decisions depend on the quality of information which they have been based on. Lack of ethics in accounting has a direct impact on the company's management, which is based on information generated by the accounting system of the company. Ethical dilemmas arising in accounting are also ethical dilemmas arising in the process of business management. 

THE PROCESS OF DIGITALIZATION OF EDUCATIONAL INSTITUTIONS

2020 ◽  
Author(s):  
Муса Увайсович Ярычев
Keyword(s):  
Learning Environment ◽  
Education System ◽  
New Teacher ◽  
Educational Institutions ◽  
Quality Of Education ◽  
Necessary Condition ◽  
Teacher Competencies ◽  
Important Condition ◽  
E Learning

В статье рассматривается вопрос о цифровизации школы, как важном условии повышения качества образования. Организованная при помощи электронных форм среда обучения предоставляет ученикам большую самостоятельность. Необходимым условием совершенствования системы образования выступает создание новых, необходимых для цифровой экономики компетенций педагога. The article considers the issue of school digitalization as an important condition for improving the quality of education. The e-learning environment provides students with greater independence. A necessary condition for improving the education system is the creation of new teacher competencies necessary for the digital economy.

Design of Synchronous Machine Model Based on PRO/E and Dynamic Simulation

2012 ◽  
Vol 246-247 ◽  
pp. 1220-1225
Author(s):  
You Kun Zhong
Keyword(s):  
Mathematical Model ◽  
Dynamic Simulation ◽  
Three Dimensional ◽  
Transmission System ◽  
Synchronous Machine ◽  
Dimensional Model ◽  
Transmission Performance ◽  
Three Dimensional Model ◽  
Machine Model ◽  
Working Principle

With the increasing of the number of cars, people are also getting higher and higher demands on the performance of the car, and especially pay attention to the improvement and optimization of automobile transmission system. The transmission is a key part of automobile transmission system, and transmission performance and stability depend on the synchronous machine, so in order to make the vehicle transmission system with higher efficiency, it is necessary to study the synchronous machine. On the basis of elaborating synchronous machine working principle, the use of dynamics theory to establish mathematical model of synchronous machine system, and to carry out the simulation of synchronous machine three-dimensional model in PRO/E environment, then the use of virtual prototype technology to optimize the parameters of synchronous machine, thereby improving the performance of synchronous machine.

Design of Hydraulic Descaling Computer Control System

2014 ◽  
Vol 608-609 ◽  
pp. 19-22
Author(s):  
Ping Xu ◽  
Jian Gang Yi
Keyword(s):  
Control System ◽  
Stability Problem ◽  
Computer Control ◽  
Control Methods ◽  
Computer Control System ◽  
Control Software ◽  
Pressure Water ◽  
Working Principle ◽  
The Stability

Hydraulic descaling system is the key device to ensure the surface quality of billet. However, traditional control methods lead to the stability problem in hydraulic descaling system. To solve the problem, the construction of the hydraulic descaling computer control system is studied, the working principle of the system is analyzed, and the high pressure water bench of hydraulic descaling is designed. Based on it, the corresponding computer control software is developed. The application shows that the designed system is stable in practice, which is helpful for enterprise production.

Research of the Punching Mechanism and Design of the Punching Device of the Peanut Mulching Film and Punching Planter

2014 ◽  
Vol 602-605 ◽  
pp. 507-510
Author(s):  
Xiao Lian Lü ◽  
Wei Wang ◽  
Xiao Rong Lü ◽  
Wei Ming Wu
Keyword(s):  
Structure Parameters ◽  
Design And Development ◽  
Main Structure ◽  
Existing Problems ◽  
Parameter Equation ◽  
Working Principle ◽  
Punching Process ◽  
Mulching Film

According to the technology requirement and existing problems of the key working parts (punching device) of the peanut mulching film and punching planter, the punching device of the peanut mulching film and punching planter was designed adapt to first mulching film and then sowing. It was introduced the structure and working principle of the punching device, and the punching mechanism are studied. The trajectory of the punching parts was analyzed in the punching process, and the parameter equation of the punching profile was established. On the basis, the main structure parameters of the punching device were analyzed and optimized. The study provides reference and basis for the design and development of the peanut mulching film and punching planter.

The Structure Design of Product Equipment for the Rigid PVC Crusting-Foam Plate

2014 ◽  
Vol 915-916 ◽  
pp. 349-355
Author(s):  
Xiao Zhen Hu
Keyword(s):  
Production Line ◽  
Power Transmission ◽  
Transmission System ◽  
Structure Design ◽  
Technical Level ◽  
Line System ◽  
Measurement And Analysis ◽  
Rigid Pvc ◽  
Cutting System

Through deeply research and analysis the extruding technology of PVC crusting-foam plate, several main equipments of the production line system such as extruder power transmission system, machine barrel, screw, cooling stereotypes system and traction cutting system are designed. The drawings of all components and parts are drawn by using AutoCAD and Pro/E soft. After the production line assembled, some related experiments, measurement and analysis are completed, and the results show that the quality of PVC plates produced by our production line attained to technical level of imported products.

scholarly journals Lubricin Structural and Functional Characteristics, Its Participation in Maintaining Articular Cartilage Tribological Parameters

2020 ◽  
pp. 22-28
Author(s):  
Tatyana Lyzo ◽  
Pavel Krylov
Keyword(s):  
Articular Cartilage ◽  
Human Life ◽  
Necessary Condition ◽  
Main Function ◽  
Functional Features ◽  
Surface Active ◽  
Main Components ◽  
Joint Prostheses ◽  
Tribological Parameters

Articular cartilage is constantly exposed to high loads. Wearing out of joints due to aging, as well as their poor functioning, is a common problem leading to a significant decline in the quality of human life. Lubricin is one of the main components of the biological lubrication system, it is a surface-active mucinous glycoprotein, which plays an important role in cartilage integrity. Its main function is to protect the cartilage surfaces from excessive friction – a necessary condition for maintaining the health of mammal joints. Moreover, lubricin has growth-regulating properties, it participates in the maturation of the subchondral bone and prevents cell adhesion. Although the molecule of lubricin was discovered almost half a century ago, there is still not much data available. The molecule has a great potential in medical applications. Studying lubricin can help solve problems caused by joint diseases, such as osteoarthritis. This review presents up-to-date information about structural and functional features of lubricin, its role in maintaining the integrity of articular cartilage, which can serve as a basis for the development of chondroprotectors or as a material to improve existing joint prostheses.

scholarly journals INTEGRATION OF PRACTICE-ORIENTED AND THEORETICAL APPROACHES AS A NECESSARY CONDITION FOR THE TRAINING OF MODERN PERSONNEL IN VOCATIONAL AND PEDAGOGICAL EDUCATION

2021 ◽  
pp. 33-41
Author(s):  
N.A. Pakhtusova ◽  
◽  
A.V. Podmareva ◽  
I.G. Samsonova
Keyword(s):  
Vocational Training ◽  
Professional Training ◽  
Active Form ◽  
Necessary Condition ◽  
Professional Activity ◽  
Professional Orientation ◽  
Theoretical Approaches ◽  
Priority Direction ◽  
Experimental Project

The article deals with the problem of improving the quality of training of teachers of vocational training by integrating practice-oriented and theoretical approaches for the implementation of the experimental project «Professionalism» as a priority direction in the development of secondary vocational education. It is noted that the professional activity of a teacher becomes more multitasking and requires the formation of professional skills while developing fl exibility of thinking, intelligence, and the ability to quickly respond to the demands of the labor market. The professional training of teachers provides for the integration of practice-oriented and theoretical approaches to form a competitive specialist. At the same time, the educational environment should diff er in the variability of approaches, educational technologies, didactic means and teaching methods. The article describes some forms of work with students that allow modeling the future professional activity of a teacher of vocational training and imply deepening and expanding the content of theoretical material and its refraction when performing practical tasks of a professional orientation. Noting the practice-oriented approach as an active form of organizing professional training of students, the authors consider the experience of working on the basis of the South Ural State Humanitarian Pedagogical University.

scholarly journals Professional Training of Public Servants as a Condition of Realization of Professional Project

2020 ◽  
Vol 47 (4) ◽  
pp. 93-104
Author(s):  
Nataliia LYPOVSKA ◽  
Pavlo ATAMANCHUK
Keyword(s):  
Professional Training ◽  
Integrated System ◽  
Civil Servants ◽  
Necessary Condition ◽  
Government Officials ◽  
Elite Education ◽  
Public Servants ◽  
Cultural Approach ◽  
Professional Project

The purpose of the study is to substantiate the need to support the system of professional training of public servants as a necessary condition for the modernization of public service. The methodological basis of the work is a socio-cultural approach in combination with the methods of sociological diagnostics – questionnaires and observation. Substantiated conditions for the implementation of the professional project of civil servants in Ukraine. It is emphasized that maintaining an integrated system of vocational training has significant advantages, such as: ensuring the appropriate level and quality of educational programs, the formation of vocational education and research environment, taking into account the educational needs of public servants. Application of research results: Emphasis is placed on the need to amend the Concept of reforming the system of professional training of civil servants, heads of local state administrations, their first deputies and deputies, local government officials and deputies of local councils to preserve the priority of the National Academy of Public Administration and its regional institutes. Іn the integrated system of professional training of public servants. It is proved that the integral implementation of the professional project of public servants is possible only if the system of elite education is preserved.

scholarly journals Does anonymity matter? Examining quality of online peer assessment and students’ attitudes

2020 ◽  
Author(s):  
Michiko Kobayashi
Keyword(s):  
Preservice Teachers ◽  
Student Engagement ◽  
Peer Assessment ◽  
Necessary Condition ◽  
Negative Statements ◽  
Students Attitudes ◽  
Online Peer Assessment ◽  
Blended Course ◽  
Us University

The study investigated the effects of anonymity on online peer assessment and compared three different conditions. Fifty-eight preservice teachers at a mid-size US university engaged in a series of online peer assessments during fall 2017. Peer assessment was embedded in a blended course as a required asynchronous activity using the Canvas learning management system. Students were randomly assigned to three different peer assessment conditions: anonymous, partially anonymous, and identifiable. They were asked to provide feedback comments and rate the quality of peers’ work. The researcher examined to what extent three different conditions had influenced the quality of feedback comments, measured quantitatively through the number of words and negative statements. At the end of the semester, a survey that included a 5-point Likert scale and several open-ended questions was also distributed to analyse students’ perceptions about peer assessment and anonymity. The results indicate that although students prefer anonymity, it may not be a necessary condition for increasing student engagement.

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